john w



(No Model.) I

' J.'W'. HOLDjS'WORTH.

ALARM FOR ELEVATORS.

Patented Apr .v 10

. V gi I UNITED SIIATESV P TE T OFFIGE.

JOHN w. HOLDSWORTH, or sir. Lo Is, Missoum, Ass eNoR or ONE- ALF TO ROBERT DoDswoRrH, or SAME PLACE. 1

-'ALARM oe ELEVATORS}.

SPECIFICATION forming part of Letters Patent No. 381.015; dated April 1 1888 Application filed 1,...15, 1887. Serial No. 233,155. (n model.)

T0 at whom, it may concern:

. Be'it known that 1, JOHN W. HOLDSWORTH, of the city of St. Louis, in the State of Missouri,'have invented a certain new anduseful Improvement in Alarms for Elevators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specifi- It broadly consists in securing to amoving part a frame supporting abell, and a wheel or pulley running on a fixed object, with a device by which the rotation ofthe wheel imparts mo- 1 tion to the bell-hammer. In an evident modification the bell and wheel or pulley frame are attached to a fixed object and the wheel turned by connection with the hoisting or hand cable.

FigureI shows the device applied to the car of an elevator. Fig. II is an enlarged side view of the device. Fig. III is a detail end view, part in section. Fig. IV shows a modification of, the mechanism between the drivewheel and the bell-hammer. -Figs.V, VI, and VII are elevations, showing modifications of the means for driving the wheel or pulley. Fig. VIII .is an axial section of the frictionwheel, showing, its relation to the hooked rod to which it imparts motion. Fig. IX isan edge view of-a friction-pulley of slightly modi v 'fied form. Fig. X is an elevation, showing in detail some of the parts shown in Fig. IV.

The device,with its modification,will be described in the order in which the figures occur.

1 are the upright guide-posts at the sides of the car. 2 is part of the car, and 3the crossbar at the top of the car.

4c is a frame connected to the cross-bar3 by a hinge, '5, at oneend. r

6 is a wheel whose shaft has bearing on standards 7, fixed to the frame 4. The frame 4 inclines upwardly from the hinge, and its wheel 6 has peripheral bearingagainst one of the posts 1. The inclination and the weight of the frame with its appendages are such that the wheel bears with sufficient force against the post to cause the rotation of the'wheel.

,The frame accommodates itself by change of the lower end.

wheel bears.

8 is a flanged wheel onthe shaft of the wheel the car to or from the post, against which'the I to the frame 4 at I cation. 1 12 is a spring drawing the hammer toward to This is a device to cause a continuousring' the belllet. I 6 ing of a bell when the elevator is in operation. 13 is a rod hinged to the bell arm. The rod 1 13 is hooked at the end 15,the hook engaging I the flange 8 upon its interior. At each rotation of the wheel 6 the tooth 9 engages the hook 15 and draws the ha'mmerawaysfrom the bell. On the release of the hook from the tooth thehammer strikes the bell, and thus,

when the car is in motion,the bell continues to sound. To'prevent the hammer remaining in 'contact'with the bell after striking it,there 11 is hinged, andthe arm is notched at 17 to give place for the stop-pim When the ham mer is at rest, the shoulder at oneend of the notch 17 bears against the'stop-pin and holds the hammer just out of contact with the bell.

(See-Fig. II.) The flexibility of the arm 11 allows the momentum of the hammer to carry rotation of the wheel 6 the hammer, is drawn outward by the pressure of the tiltj-piece 1 against a projection, 11 of the arm 11, from which it escapes as the lever'aud arm move outward and the hammeris thrown against will engage the projection of the arm 11 on 3 moving outward, the spring 25 also acting to return the lever 2llto its normal position. As,

wad

the i the lever is returning to its normal position,

consisting of the hammer with its pivoted 2 i is a stop-pin, 16, in the lug, to which the arm 1 arm, and the actuating-lever with the tiltpiece,and the springs by which they are drawn toward the bell, is old in connection withbells and gongs, and no novelty is claimed in them, and no further description is necessary.

In the modification shown in Fig. V the wheel or pulley G ls grooved at the periphery, and bears against thehand-cord 23, so that the bell maybe sounded by the movement of the hand-cord, and will continue to sound while the car is moving.

In the modification shown in Fig. VI the wheel or pulley 6 is grooved at the periphery, and the hand-cord is given a turn around it to insure its turning as the hand-cord is moved, or asthe car moves. In this modificatiomand also in the modification shown. in Fig. V, the frame 4 may be rigidly connected to the car. i In the modification shown in Fig. VII the frame 4 is hinged to a fixed object, 24, and the 1 wheel or pulley 6" is peripherically grooved and bears against the cable 25, by which the car is raised, so that the bell is caused to sound during the movement of the car. In the form shown in Fig.VII it is not essential that the frame 4 should be jointed to the object to which it is connected, as the transverse position of the cable 25 would not vary materially.

I claim as my invention- 1. In an elevator, the combination,with the fixed and the movable partsthereoflof a wheel affixed to one and bearing constantly against the other, so as to be rotated continuously during the movement of the elevator, a bell,ahammer for sounding the bell, and mechanism actcarried by said frame and bearing against post 1,a bell carried by said frame, a bell-hammer, a

wheel, 8, rotated by the wheel 6 and having a tooth, 9, the rod l3,engaging at one end with the bell-hammer and engaged at the other by said tooth, and the spring 12, connected to the hammer for throwing it against the bell, substantially as and for the purposes set forth.

4. The combination, in an elevator-alarm, of the frame 4, hinged to the car, a wheel, 6, carried by said frame and bearing against the side post, 1, the flanged wheel 8, carried by wheel 6 and having tooth 9slocated upon its inner periphery, the rod 13,having hooked end 15, adapted to be engaged by the tooth 7, the bell 14, the hammer 10, arm 11, by which it is carried, and the spring 12,for forcing the hammer against the bell, substantially as and for the purposes set forth.

JOHN W. HOLDSVVORTH. Witnesses:

SAML. KNIGHT, BENJN. A. KNIGHT. 

